Locking device



L. E. WALLACE.

LOCKING DEVICE.

I APPLI'CATION FILED APR. 23, I920- -1,434,031. Patented Oct. 31, 1922.

Patented Oct. 31, 1922.

UNITED stares LEONARD E. WALLACE, OF PINE BLUFF, ARKANSAS.

LOCKING nnvrcn.

Application filed April 23,.

To all whom it may concern:

Be it known that I, LEONARD E. WALLACE, a citizen of the United States,residing at Pine Bluff, in the county of Jefferson and State ofArkansas, have invented certain new and useful Improvements in a LockingDevice, of which the following is a specifi cation.

My invention relates to a locking device particularly adapted for use onautomobiles to render them temporarily inoperative to guard againsttheft.

The main object is to provide a means which may be operated to break theignition circuit and at the same time not be rcstorable to originalcondition without the use of key means which the driver retains.

Another object is to provide a lock having a key-controlled bolt initself locked against turning by a key-controlled bolt and whichcontrols a switch in the ignition circuit.

I also aim to provide a simple, eflicent and relatively inexpensivearticle capable of use on all automobiles, and possessing the novelfeatures of construction, combinations and arrangements hereinafterdescribed and illustrated in accompanying drawings, wherein onepreferred embodiment is shown and wherein Figure 1 is a view of theimproved lock in vertical section; I

Figure 2 is a top or plan view;

Figure 3 is a bottom view;

Figure 4 is a fragmentary cross-sectional view on the line 4-4 of Figure1;

Figure 5 is a crosssectional view on the line 5-5 of Figure 1, and

Figure 6 is a perspective view of a key.

Referring specially to the drawings, a suitable casing A, which may becylindrical as shown is provided, having an end wall 6 in which a tube 7is centrally disposed to extend both interiorly and exteriorly. Theother end wall 8 may be of any suitable construction and fastened in anydesired manner. having a central opening 8 with an annular flange 9 inline with the sleeve or tube 7. In the sleeve 7 and opening 8', a bolt10 is disposed for rotary and sliding movement. This bolt is providedwith a suitable head 11 to be engaged by the socket of a key such as 12in Figure 6, and the head is preferably completely within the sleeve 7as shown so that an ordinary wrench or other tool cannot be used totamper with the lock. On theend wall 6, a Yale or other 1920. Serial No.376,043.

suitable lock 13 may be mounted so that its bolt may be thrown intorecesses 14: and 15 of the bolt 10 to'hold the bolt againstrotation. Anarm 16 is diametrically disposed on the bolt 10 and adapted to enterdiametrically opposite openings provided in the tube 7 at 17 and openingat the lower end.

of the tube. A coil spring 18 surrounds and is fastened to the tube andto thebottcm end wall 8. While not necessary, yet the flange of opening8 may be provided with slots 20 to receive a pin 21 passing through thebolt 10.

Arm 16 is bent at right angles as at 22 and serves as a switch arm. Thewires 23 from the battery pass through a conduit 24-, which communicateswith the interior of the casing A. The wires extend within the casingand are connected to terminals or contacts 25 on a base 26, which areadapted to be bridged by the right angle portion 22 of the arm 16.

At 27, a stop for the rotary movement of the switch arm and bolt isprovided adapted to be engaged by the switch arm directly.

The casing may be mounted at any desired location on the machine and forinstance may be bolted as at 28 to a part 29 thereof. With the parts inthe relation shown in Figure 1, the automobile to which the device isconnected may be operated since there is no break or gap in the groundwire 2311s long as the switch arm 22 bridges the contacts 25. Ifthemachine is to be parked, after the motor is stopped, the Yale lock isoperated by its key to retract its bolt, whereuponkey 12 may engage head11, to first depress the bolt 10 so that arm 16 will free the lower endthereof. secondly to turn the key and bolt until the arm 16 engages thestop 27 and then release it so that the arm will reenter the slots 17.urged by spring 18 and the bolt then be locked by the bolt or look 13extending into the recess 15. Thus the circuit is broken and cannot bereestablished until the driver returns and uses both the key for theYale lock and the key 12. It is obvious that the circut may bereestablshed by operating the device opposite to that described. Ofcourse when the circuit is broken, no current will flow from the batteryand it is impossible to obtain a spark or operate the self-starter ofthe automobile.

Since merely the preferred embodiment has been illustrated anddescribed, it is to be understood that changes in the details may beresorted to Within the spirit and scope as defined by appended claims.

I claim 1. In a device of the class described, a ing having a tube, abolt slidable'and r0- tatable in said tube, said tube having aslot, aswitch arm extending from the bolt adapted to enter the slot to maintainthe switch open, or "closed a return spring for the bolt, a lock for thebolt mounted on the casing, means engageable to operate the bolt, andthe tube guarding said last means to prevent tampering therewith.

2. In a device of the class described, a casing having a tube, said tubebeing provided With slots a bolt extending through the (121s ing andmounted to slide and revolve Within said tube, a switch arm carried bythe bolt and entering the slots, means for disengaging ,the arm fromsaidv slots and revolving said M LEONARD E. WALLACE,

Witnesses J. W. \VALLACE, O. E. PERRY.

